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AM Receivers
157
On the Test Set using the knob and data entry keys:
14. Decrease Amplitude until the SINAD meter reads 10 dB.
❒ If desired, use the meter averaging function for the SINAD indicator.
a. Select dB on the SINAD meter.
b. Press the AVG key.
❒ If desired, select the number of readings to average.
• Enter the number of readings to average.
Higher number of readings averaged will require longer to
reach the final indication.
15. Set Amplitude units to dBm.
16. Increase Amplitude (more positive) by 3 dB.
• Record Amplitude setting for later use.
To Screen
RX TEST
AC Level
Filter 1
50Hz HPF
Filter 2
15kHz HPF
Atten Hold
On/Off
Ext Load R
8.00
Ω
RF GEN
RF ANL
AF ANL
SCOPE
SPEC ANL
ENCODER
DECODER
RADIO INT
More
W
dB
0.4106
SINAD
RF Gen Freq
145.280000
MHz
Amplitude
0199
uV
Output Port
RF Out/Dupl
AFGen1 Freq
1.0000
kHz
AFGen1 To
3.00
kHz
FM
AFGen2 To
10.00
mV
Audio Out
09.51
Avg
24
AFGen2 Freq
400.0
kHz